This is a list of dams in New Hampshire that have been removed as physical impediments to free-flowing rivers or streams.__TOC__
| Dam[1] | Height | Year removed | Location | Watercourse | Watershed | Notes | |
|---|---|---|---|---|---|---|---|
| Judd Brook Dam | 2017 | Easton | Judd Brook | Ammonoosuc River | Water diversion dam. | ||
| Pearl Lake Brook Dam | 2008 | Lisbon | Pearl Lake Brook | ||||
| South Branch Gale River Dam | 2020 | Bethlehem | South Branch Gale River | Water supply dam owned by Littleton Water and Light. | |||
| Munn Pond Dam | 2019 | Errol | Tributary to Androscoggin River | Androscoggin River | Dam built for recreation and log storage. Owned by the New Hampshire Fish and Game Department. | ||
| Homestead Woolen Mills Dam | 2010 | Swanzey | Ashuelot River | Ashuelot River | |||
| McGoldrick Dam | 2001 | Hinsdale | Owned by the McGoldrick Paper Company. | ||||
| Winchester Dam | 2002 | Winchester | |||||
| Ferry Brook Dam | 2019 | Keene | Ferry Brook | Dam built for conservation and agriculture. Owned by the Cheshire County Fish & Game Club. | |||
| Pine Mill Dam | 2019 | North Haverhill | Clark Brook | Connecticut River | Grist mill dam owned by the Connecticut River Conservancy and Mill Dam Water Supply. | ||
| Clark Pond Dam | 2018 | Haverhill | |||||
| Cold River Dam | [2] | 2003 | Walpole | Cold River | Dam built in the 1970s by Cold River Materials. | ||
| Lyman Falls Dam Remnant | 2022 | Columbia | Connecticut River | Hydroelectric dam owned by the Vermont River Conservancy. | |||
| Hubner Pond Dam | 2019 | Chesterfield | Tributary to Hubbard Brook | Dam built for recreation. | |||
| Butternut Pond Dam | 2013 | Grantham | Butternut Brook | Sugar River | Owned by the New Hampshire Fish and Game Department. | ||
| Stevens Brook Dam | 2011 | Claremont | Stevens Brook | Fish rearing pond dam. | |||
| West Henniker Dam | 2004 | Henniker | Contoocook River | Contoocook River | Paper mill dam owned by the Town of Henniker. | ||
| Greene Wildlife Pond Dam (Ainsworth Pond Dam) | 2015 | Jaffrey | Stony Brook | Dam built for recreation and wildlife. | |||
| Beaver Lake Dam | 2012 | Derry | Beaver Brook | Merrimack River | Water supply dam for the Benjamin Chase Mill. Owned by the Town of Derry. | ||
| Berry Brook Reservoir Dam | 2013 | Pittsfield | Berry Pond Brook | ||||
| Maxwell Pond Dam | 2009 | Manchester | Black Brook | The dam was originally constructed to create Maxwell Pond on Black Brook in 1900 for the purpose of ice harvesting. Owned by the City of Manchester. | |||
| Heads Pond Dam | 2010 | Hooksett | Browns Brook | ||||
| Jenkins Road McQuade Brook Dam | 2012 | Bedford | McQuade Brook | Dam built for transportation, owned by the Town of Bedford. | |||
| McQuesten Dam #1 | 2016 | Manchester | McQuesten Brook | ||||
| McQuesten Dam #2 | 2016 | Manchester | |||||
| McQuesten Dam #3 | 2016 | Manchester | |||||
| South Main Street Dam | 2016 | Manchester | Stormwater retention dam. | ||||
| Magazine Street Dam | 2014 | Bedford | Riddle Brook | ||||
| Merrimack Village Dam | 2008 | Merrimack | Souhegan River | Grist mill dam later used as a water supply. | |||
| Anne Jackson Girl Scout Dam | 2012 | Wilton | Tributary to Souhegan River | Dam built for recreation. Owned by the Girl Scouts of the Green and White Mountains. | |||
| Buck Street Dam West | 2011 | Pembroke | Suncook River | ||||
| Tannery Brook Dam | 2015 | Boscawen | Tannery Brook | Dam built for recreation and wildlife. | |||
| Boyce Pond Dam/Horseshoe Pond Dam | 2014 | Fitzwilliam | Tributary to Kemp Brook | Millers River | Mill dam. | ||
| Upper IPC Dam | 2008 | Bristol | Newfound River | Pemigewasset River | |||
| Bellamy River Dam V | 2004 | Dover | Bellamy River | Piscataqua River | |||
| Lower Sawyer Mill Dam | 2018 | Dover | Mill dams that powered Sawyer Woolen Mills. | ||||
| Upper Sawyer Mill Dam | 2019 | Dover | |||||
| Union Village Dam | 2014 | Winchester | Branch River | Hydropower dam. | |||
| Champlin Pond Dam #1 | 2005 | Rochester | Clark Brook | ||||
| Champlin Pond Dam #2 | 2005 | Rochester | |||||
| Great Dam | 2016 | Exeter | Exeter River | Industrial dam. | |||
| Bunker Pond Dam | 2011 | Epping | Lamprey River | Owned by the New Hampshire Department of Environmental Services. | |||
| Rex Tannery Dam | 2010 | Raymond | Tributary to Lamprey River | ||||
| Little Hale Pond Dam | 2019 | Durham | Littlehole Creek | Dam built for recreation, owned by Durham Public Works. | |||
| Lower Peverly Pond Dam | 2021 | Newington | Peverly Brook | Water supply dam owned by the U.S. Fish and Wildlife Service. | |||
| Winnicut River Dam | 2009 | Greenland | Winnicut River | Owned by the New Hampshire Fish and Game Department. | |||
| Bearcamp River Dam | 2003 | South Tamworth | Bearcamp River | Saco River | |||
| Badger Pond Dam | 2004 | Belmont | Tioga River | Winnipesaukee River |
| Dam[3] | Expected year | Location | Watercourse | Watershed | Notes | |
|---|---|---|---|---|---|---|
| Fiske Mill Dam | 2024 | Hinsdale | Ashuelot River | Connecticut River | Mill dam built in 1922, converted into a hydroelectric dam in 1986., The Nature Conservancy was in talks to purchase and remove the dam.[4] | |
| Israel River Dam | Lancaster | Israel River | ||||
| Kimball Brook Dam | 2023 | Stratford | Kimball Brook | [5] | ||
| Washburn Mill Dam | 2023 | Colebrook | Mohawk River | [6] | ||
| Brennan Brook/Crochet Mountain Brook Dam | 2024 | Francestown | Brennan Brook | Merrimack River | [7] | |
| Breeder Pond Dam (Highway Pond Dam) | Franconia | Pemigewasset River | The project would remove the dam and replace it with a fish ladder. This would allow trout to move freely between Breeder Pond and Profile Lake, with the intention of creating a self-sustaining population and ending the need for stocking.[8] | |||
| Stone Pond Dam | 2024 | Fitzwilliam | Scott Brook | Millers River | ||
| Gonic Dam | Gonic | Cochecho River | Piscataqua River | Rochester City Council voted unanimously to pursue dam removal in 2010.[9], the dams are owned by a developer who wants to remove them before building housing in the area.[10] | ||
| Gonic Sawmill Dam | Gonic | |||||
| Mill Pond Dam | 2024 | Durham | Oyster River | [11] [12] | ||
| Beech River Mill Dam | Ossipee | Beech River | Saco River | In 2020 the Davis Conservation Foundation granted the New Hampshire Chapter of The Nature Conservancy $15,000 toward a dam removal assessment.[13] |